Note 7 - Acquisition of Business - Preliminary Assignment of Aggregate Consideration (Details) - USD ($)	Sep. 30, 2016	Mar. 08, 2016	Dec. 31, 2015
BAMKO [Member]
Accounts receivable		$ 4,885,000
Prepaid expenses and other current assets		3,200,000
Inventories		236,000
Property, plant and equipment		199,000
Other assets		100,000
Identifiable intangible assets		11,360,000
Goodwill		6,994,000
Total assets		26,974,000
Accounts payable		1,314,000
Other current liabilities		736,000
Future contingent liabilities		5,205,000
Total liabilities		$ 7,255,000
Goodwill	$ 11,277,000		$ 4,135,000